<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>跨域请求测试</title>
    <script src="jquery-3.4.1.min.js"></script>
</head>
<body>
<div id="contentDiv"></div>
<div id="deleteResult"></div>
<input type="button" value="提交数据" onclick="getData()"><br>
<input type="button" value="删除数据" onclick="deleteData()"><br>

<script>
    function deleteData() {
        $.ajax({
            url: 'http://localhost:8081/book/99',
            type: 'delete',
            success: function (mag) {
                $("#deleteResult").html(mag);
            }
        })
    }

    function getData() {
        $.ajax({
            url: 'http://localhost:8081/book/',
            type: 'post',
            data: {name: '三国演义'},
            success: function (mag) {
                $("#contentDiv").html(mag);
            }
        })
    }
</script>
</body>
</html>